[volt-nuts] low emf solder

[Scott Stobbe]

Typing on phone... If the bond wires are gold they still are dissimilar to
pcb copper, but if they were copper bond wires, thermal gradients would be
less of an issue.

On Friday, 28 October 2016, Scott Stobbe <scott.j.stobbe at gmail.com> wrote:

> "chip on board", not sure that it wouldnt help
>
> On Friday, 28 October 2016, Dr. David Kirkby (Kirkby Microwave Ltd) <
> drkirkby at kirkbymicrowave.co.uk
> <javascript:_e(%7B%7D,'cvml','drkirkby at kirkbymicrowave.co.uk');>> wrote:
>
>> On 28 Oct 2016 15:25, "Juris L" <juris.l at gmail.com> wrote:
>> >
>> > Found reference to optimal emf solder composition cadmium/tin alloy
>> > (70 %/30 %) in JJ array measurement article page 12.
>>
>> I wonder how practical it is to weld test leads, so there's no solder or
>> thermal EMF.
>>
>> I know that this will sound crazy, and probably is, but could one weld
>> components to a PCB?
>>
>> I don't even have the excuse of been drunk or taking drugs,  but I will
>> risk ridicule for making the above comment!  Sometimes thinking out of the
>> box is useful.
>>
>> Dave.
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>